This assumes that writing a ticket causes people to explain their rationale better than a commit comment does. That might be the case, but it often isn't becaus

This assumes that writing a ticket causes people to explain their rationale better than a commit comment does. That might be the case, but it often isn't because tickets are filed by developers themselves, or by PMs who just write tickets like: "A system requirement is that users be able to do X" without further explanation.